/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/ViewModels/Stack/NiagaraStackGraphUtilities.h
When you have the guid of the node available, we don't need to traverse pins and can just look up the correct node directly.
namespace FNiagaraStackGraphUtilities { [UNiagaraNodeFunctionCall](API\Plugins\NiagaraEditor\UNiagaraNodeFunctionCall) * FNiagaraStackGraphUtilities::FindFunctionCallNode ( [FGuid](API\Runtime\Core\Misc\FGuid) FunctionCallGuid, [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [FNiagaraEmitterViewModel](API\Plugins\NiagaraEditor\ViewModels\FNiagaraEmitterViewModel) > EmitterViewModel ) }